<template>
  <view class="login-container">
    <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
    <button type="primary" class="btn-login" @click="getUserInfo">一键登录</button>
    <view class="tips-text">登录后尽享更多权益</view>
  </view>
</template>

<script>
  import {
    mapMutations,
    mapState
  } from 'vuex'
  export default {
    computed: {
      ...mapState('user', ['redirectInfo'])
    },
    data() {
      return {

      };
    },
    methods: {
      ...mapMutations('user', ['updateUserInfo', 'updateToken', 'updateRedirectInfo']),
      async getUserInfo() {
        /* if (e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权！')
        this.updateUserInfo(e.detail.userInfo)
        this.getToken(e.detail) */
        const [err, succ] = await uni.getUserProfile({
          desc: '登录'
        })
        if(err || succ.errMsg !== 'getUserProfile:ok') return uni.$showMsg('您取消了登录授权')
        this.updateUserInfo(succ.userInfo)
        this.getToken(succ) 
        // console.log(succ)
      },
      async getToken(info) {
        // 调用微信登录接口
        const [err, res] = await uni.login().catch(err => err)
        // 判断是否 uni.login() 调用失败
        if (err || res.errMsg !== 'login:ok') return uni.$showError('登录失败！')
        // 准备参数对象
        const query = {
          code: res.code,
          encryptedData: info.encryptedData,
          iv: info.iv,
          rawData: info.rawData,
          signature: info.signature
        }
        // console.log(query)
        // 换取 token
        const {
          data: loginResult
        } = await uni.$http.post('/api/public/v1/users/wxlogin', query)
        console.log(loginResult)
        if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')
        uni.$showMsg('登录成功')
        this.updateToken(loginResult.message.token)
        this.navigateBack()
      },
      navigateBack() {
        if(this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
          uni.switchTab({
            url: this.redirectInfo.from,
            complete: () => {
              this.updateRedirectInfo(null)
            }
          })
        }
      }
    }
  }
</script>

<style lang="scss">
  .login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 750rpx;
    background-color: #F8F8F8;
    justify-content: center;
    position: relative;
    overflow: hidden;

    &::after {
      content: ' ';
      background-color: #FFFFFF;
      position: absolute;
      display: block;
      width: 100%;
      height: 100rpx;
      border-radius: 100%;
      left: 0;
      bottom: 0;
      transform: translateY(50%);
      z-index: 9999;
    }

    .btn-login {
      width: 90%;
      border-radius: 200rpx;
      margin: 30rpx 0;
      background-color: #C00000;
    }

    .tips-text {
      font-size: 24rpx;
      color: gray;
    }
  }
</style>
